Self-threading loom-shuttle.



UNITED STATES Patented May 19, 1903.

PATENT OFFICE.

GEORGE FAIR, OF SALEM, MASSACHUSETTS, ASSIGNOR OF= ONE-HALF TO EDWIN W. GAY, OF NEWTON, MASSACHUSETTS; LYDIA L. FAIR AD- MINISTRATRIX OF SAID GEORGE FAIR, DECEASED; GEORGE M. WEED ADMINISTRATOR OF SAID EDWIN W. GAY, DECEASED.

SELF-THREADIN'GLO'OM SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 728,383, dated May 19, 1903.

Application filed June 6, 1902. I Serial No. 110,513. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE FAIR, of Salem, in the county of Essex and State'of Massachusetts, have invented certain new and useful Improvements in Self-Threading Loom-Shuttles, of which the following is a specification.

This invention relates to 10om-shuttles,par-

larly when colored thread is employed. Many attempts have been made to provide devices or attachments which, in connection with a slit formed in the wallof the shuttle and communicating with the delivery-eye, will enable the thread-to be passed through said slit and guided to said eye. This construction, however, weakens the wall of the shuttle adjacent to the slit formed therein, and, furthermore, the upper edge of the slit in the shuttle-wall is liable to catch upon and cut the threads.

The object of this invention is to provide an attachment for shuttles having deliveringeyes and slits leading thereto, wh icl1 attach'- ment will brace the wall of the shuttle, so as to strengthen the latter as a whole, and will:

also provide a guard for the wall-slit to prevent the warp from entering said slit.

To these ends the invention consists in the construction and combination of parts,

substantially as hereinafter described and fore braces said wall. prefer to construct this bracing-plate is as views of the attachment, taken from opposite directions. Fig. 6 represents a detail elevation of one end of-the shuttle looking toward the delivery-eye. Fig. 7 represents a detail elevation of a slightly-modified form of the attachment.

The same reference characters indicate the same'parts in all the figures.

The body of the shuttle is represented at a and is, formed with the usual cavity 5, one

end of the spindle c and cop d being also represented in Figs. 1 and 3. Forward of the end of the spindle the bottom of the cavity .1) is formed with a surface, preferably a flat horizontal one, asat e, for the support of the attachment,which will presently'be described. A bushing f surrounds the delivery-eye, said eye and bushing being illustrated a'szof a well-known type, The bushing f and the Wall of the shuttle-body above it are formed witha thread-slit'g, which is or may be also of a well-known form.

Thethreading attachment as a whole is indicated at h, suitable meansfsuch as a screw '5, being employed for securing the said attachment to the bottom 6 of the cavity. The attachment is formed with a base 1,which rests upon the bottom e of the cavity and is above mentioned. A plate or partition rises from this base and extends across from one wallto the other of the shuttle, and there- One form in which I indicated in Figs. 4: and 5, in which said plate comprises a front wall 2 and a rear wall 3, preferably formed of a single piece of sheet metal integral with the base 1. Either one of these walls 2 and 3, or both together, may form the bracing plate or partition. I prefer, however, to utilize both, as shown, partly for the reason that said bracing-plate when formed of a double piece, as shown, is stronger than when made of a single piece even twice the thickness of one single wall, and said ar-.

rangement of the two walls permits a better tension to be obtained for the thread, as will be hereinafter described. The walls 2 and 3 are formed with a slit 4, extending downward from the bend and terminating in thread-eyes 5, one in each of the walls 2 and 3. Preferably integral with the front plate 2 is a forwardly-extending plate 6, which extends across the thread-slit g in the wall of the shuttle and has its upper rounded end projecting slightly above the upper end of said slit. This arrangement of the guardplate 6 prevents the warp from entering the slit g. Below the guard-plate 6 the attachment is formed with an ear or lug 7, the upper edge of which is preferably slightly concave to coact with a similarly concave lower edge of the guard-plate 6 to form a threadeye 8. A slight space is formed between the forwardly-projecting edge of the guard-plate 6 and the adjacent inner wall of the shuttle, as clearly shown in Fig. 1, to form a space through which the thread may pass.

A shuttle having this improved attachment is threaded in the following simple manner: The thread is drawn downward through the slit 4 until it reaches the eyes 5. While held in this position with one finger, the operative takes the free end of the thread and passing it between the upper end of the guard-plate 6 and the adjacent inner wall of the shuttle draws the thread to and downward in therwallslit g, the thread readily passing through the slit between the lower end of the guard-plate 6 and the upper edge of thelug7into the eye 8, formed in the attachment, the thread also passing readily into the delivery-eye of the shuttle. By forming one of the eyes 5 out of alinement with the other a tension can be provided for the thread, which is very desirable when using the shuttle for weaving woolen cloth. As indicated by dotted lines in Fig. 7, the thread-eye 5 in the wall 3 which is nearest to the spindle is in alinement with said spindle, while the eye 5 in the front wall 2 is at one side of said point or line, the slit 4: of course connecting the two eyes. Obviously an attachment having eyes 5 which are to a greater degree orextent out of alinement than that indicated in Fig. 7 will produce a greater tension on the thread.

The lower edge of the guard-plate 6 and the upper edge of the ear or lug 7 slightly overlap, as shown in Figs. 4: and 5, and thus form a lock which prevents the escape of the thread laterally from the eye 8.

I claim 1. A threading attachment for loom-shuttles, consisting of a base adapted to be secured to the bottom of the cavity of the shuttle and having a vertical Wall rising therefrom and formed with a thread-eye and aslit leading thereto, and a plate extending substantially at a right angle to the said Wall and having a rounded upper end.

2. A threading attachment for loom-shuttles, consisting of a base adapted to be socured to the bottom of the cavity of the shuttle and having a vertical wall rising therefrom, and a second vertical wall behind the first and integral therewith, thread-eyes being formed in said walls, and a thread-slit connecting them with the top of the two walls, and an integral plate bent at a right angle to the front vertical wall and formed with a rounded upper end and a concave lower edge, substantially as and for the purpose described.

In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE FAIR.

WVitnesses:

HORACE BROWN, A. W. HARRISON. 

